Locomotive-frame structure



March 1929. w. E. WOODARD LOCOMOTIVE FRAME STRUCTURE 3 Sheets-SheetFiled Jan. 21, 1926 ammm @51 (Mime/1f March 5, 1929. w. E. WOODARDLOCOMOTIVE FRAME STRUCTURE Filed Jan. 21, 1926 3 Sheets-Sheet 2awuenio'c mm WvM $51, A Quanta/1f March 5, 1929. w. E. WOODARD 1,704,272

LOG OMOT I VE FRAME S TRUC TUBE Filed Jan. 21, 1926 5 Sheets-Sheet 5 I ll I Svwemtoz Patented Mar. 5, 1929.

UNITED STATES WILLIAM E. WOODARD, 0F FOREST HILLS, NEW YORK.

LOOOMOTIVE-FRAME STRUCTURE Application filed January 21, 1926. SerialNo. 82,648.

This invention has reference to an improved structure of locomotiveframes and has for its primary object the provision of a device of thischaracter which is formed basically in two parts, one termed the forwardportion, which is relatively narrow to rest between the driving wheelsof the locomotive, and the rear part, which is articulated to theforward part and extended sidewise into a large open frame adapted tocarry'the plurality of pairs of wheels which support this part, toprovide ample space for the mounting on this part of the ash pan, and toafford, by means of diagonal rearward extension, a stable backing forthe buffing strains to which the frame is subjected.

Another object of this invention is the construction of a locomotiveframe of the character indicated, in two unitary castings, the forwardnarrow portion, which is placed between the driving wheels, being onecasting, and the rear expanded open portion being a second'casting, thetwo having articulated connections with one another.

A further object of the inventionis the provision on the rear part, ofsuitable boiler supports which will permit free movement of the frameand at the same time resist any weaving motion in the two parts of thegeneral frame structure.

A further object of this invention is the provision in the two castmembers, that is the forward and the rear parts of the f ame, ofsuitable interengaging means whereby the rear part is held in properhorizontal alignment with the forward portion.

A further object of the invention is the provision on the rear portionof the frame of suitable means for supporting an auxiliary power devicesuch as the well known booster.

A further object of the invention is the provision of an improvedconstruction of the rear portion, which carries the rear wheels of thelocomotive, with the draw pocket of just suflicient width crosswise ofthe engine to take the buffer, and combining this with outwardly anddiagonally extendin members forming a connection with the sitfie framemembers of the rear portion, the side frame members being provided witha plurality of pedestal jaws forward of the diagonal parts at the rear.This arrangement of diagonal rear corner provides ample room for thelocation on the outside of the frame member of injectors and piping forthe same and booster piping and other fixtures which may have to beapplied.

By the arrangement above specified I form the rear end of the rearmember of the locomotive frame in a kind of triangular shape whichpermits a great deal more space at the'rear corners than it is possibleto secure with a built up and bolted structure where in the side membersmust be run in parallel planes outside the wheels and a rear crossmember inserted to be attached to such side members by boltedconnections.

The triangular formation also adds considerably to the strength andrigidity of the structure as compared with the built up form and alsosaves a substantial amount in weight as well as providing for the savingin space referred to. This saving in space is of great importance onmodern locomotives in which a large number of pipe and water connectionsmust be taken care of between the engine and tender.

In order that my invention may be better understood, I will now proceedto describe the same in connection with the accompanying drawings inwhich ig. '1 is a side elevation showing a locomotive with my improved"frame applied thereto;

Fig. 2 is a plan view of the frame itself showing clearly the narrowforward portion which extends longitudinally between the driving wheelsand the extended open rear portion with the triangular rear end which isarticulated to the forward portion as above set forth.

Fig. 3 is a side elevation of the rear portion or member of the frame;

Fig. 4 is a part plan view of the structure shown in Fig. 3; a

Fig. 5 is a half end view of the same construction';

Fig. 6 is an enlarged detailed view showing the articulated connectionbetween the front and rearmembers of the frame; and

Fig. 7 is a plan view, partly in section, of the apparatus shown in Fig.6.

Referring now more particularly to Figs. 1 and 2 it will be seen that Ihave therein indicated a locomotive boiler 1 having a fire box 2 and cab3 with cylinders 4 and forward wheels 5.

Between the several pairs of driving wheels 6 I mount a forward memberof my improved frame which is composed primarily of a unitary casting7'having side bars 8 and cross members 9 and boiler support brackets 10,11 and 12. The longitudinal members 8 are provided with the usualpedestal aws 13 for carrying bearing boxes which receive the axles 14.

The rear half of the frame I construct preferably of a unitary casting15 which is of an open frame shape with side longitudinal members 16which extend outside the plane of the wheels 17 and 18, which latterrevolve inside the members 16 in boxes carried in pedestals 19 and 20formed in the side members 16. The side members 16 are joined togetherat the rear by means of the diagonally extending parts 21 which areinclined as shown and embrace between them the draw pocket 22, therebeing a downward extension 23 which carries the cylinders 24; of thebooster device which at its forward end is mounted around the axle 25.

On the upper sides of the side members 16, and just forward of theinclined parts 21 which latter form with the draw pocket 22 a kind oftriangular rear end, I provide a couple of supports 26 on which the rearend of the fire box rests as indicated at 27.

At the forward end of the rear member 15 I provide an articulatedconnection with the forward member 7 by means which is shown more indetail in Figs. 6 and 7 wherein the rear end of the member 7 isillustrated as provided with a recess 28 constructed to receive theextension 29. A bolt or pin 30 held in place by plate 31-serves toconnect the two parts 7 and 15 together and as a means for avoidingundue torsional movement of the one part with relation to the other, Iprovide bearing lugs 32 which engage extensions of the forward part asindicated at 33 and which thus hold the forward and rear portions of theframe in proper relative horizontal position.

- As indicated in Figs. 3 and 4 I provide a cross member 34 which isintended as a support for an ash pan that extends downwardly between theside members 16 of the rear portion of the frame and also aids instiffening the rear part at a point intermediate the ends. In theconstruction shown I propose to cast each of the two forward locomotiveframe members in one casting, making the crossties 9, guide yoke support9 and valve motion support 9 integral with the frame side members. Thisconstruction will eliminate bolting surfaces and parts as well as reduceweights. I am aware that it has heretofore been-proposed to cast frameswith two side members in one piece, but my improvement goes farther thanhas heretofore been proposed, in that I arrange an integral constructionat the rear end of the front engine frames to form a hinged joint withan articulated rear end. At this point in a locomotive structure havingan articulated rear, very high stresses are concentrated, due to thefact that at this point the firebox and rear end of the boiler aresupported upon the front engine frames, one support being at the pointmarked 1 on the drawin and the other support being at the point marked 1(outboard bearings). These connections are preferably made by verticalexpansion plates as shown in the side view of the locomotive in Fig. 1.

On account of limitations of space it is extremely difficult to get abolted connection at this point which will provide anywhere near thesame degree of strength and rigidity as can be secured by forming thehinge casting in one piece with the two side frames. The frames andhinge casting at this point not only have to carry the vertical loads atthe rear end of the boiler but also transmit heavy pulling and buffingstrains. In addition, the front frames at this point have recesses castin them with which the forward end of the articulated trailer truckengages. This also introduces certain strains in engine frames at thispoint, and forming the hinge casting in i one piece aids in securing abettercondition of strength and rigidity at the point where the rearframe engages the front frame.

I claim 1. A locomotive frame structure comprising in combinationunitary cast forward and rear frame members articulated together, theforward frame member being within the plane of the locomotive wheels andthe rear frame member having its sides outside the plane of thelocomotive wheels, and a plurality of pairs of wheels mounted in each ofsaid frame members.

2. A locomotive frame structure comprising in combination unitary castforward and rear frame members articulated together, the forward framemember being within the plane of the locomotive wheels and the rearframe member having its sides outside the plane of the locomotivewheels, and a plurality of pairs of wheels mounted in each of said framemembers, the side members of the rear portion of the articulated framebein spaced apart a sufficient distance to provi e clearance for an ashpan.

3. A locomotive frame structure comprising in combination unitary castforward and rear frame members articulated together, the forward framemember being within the plane of the locomotive wheels and the rearframe member having its sides outside the plane of the locomotivewheels, and a plurality of pairs of wheels mounted in each of said framemembers and power mechanism mounted to drive wheels in each .of saidmembers.

4; A locomotive structure having forward and rear frame membersarticulated together,

prising a cast unitary structure having motive frame com rised offorward and rear formed therewith supportsjfor the boiler sectionsarticulate together, the bearings for and a connecting member fortherear part the fire box being cast unitary with the for- 10 of theframe. v ward frame section. 5 5. A locomotive structure comprising inIn testimony whereof, I have hereunto combination a fire box, bearin sfor support signed my name. 1 7

ing the forward end of the fire ox, and a 1000- WILLIAM E. WOODARD.

